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If x - y > 10, is x - y > x + y ?

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If x - y > 10, is x - y > x + y ? [#permalink] New post 21 Nov 2010, 15:44
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If x - y > 10, is x - y > x + y ?

(1) x = 8
(2) y = -20
[Reveal] Spoiler: OA

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Re: DS: GMAT prep [#permalink] New post 21 Nov 2010, 15:54
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vrajesh wrote:
if x - y > 10, is x - y > x + y
(1) x = 8
(2) y = -20


Can you please explain each statement. Not just the answer.


Given: x-y>10. Question: is x-y>x+y? --> is 2y<0? --> is y<0?

(1) x=8 --> 8-y>10 --> y<-2, hence y<0. Sufficient.
(2) y=-20, hence y<0. Sufficient.

Answer: D.
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Re: DS: GMAT prep [#permalink] New post 21 Nov 2010, 16:17
thanks for the quick response.
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Re: DS: GMAT prep [#permalink] New post 16 Mar 2011, 21:46
On simplfying, it can be seen that the question is asking if y < 0

From (1) 8 - y > 10

=> y < -2, so sufficient

(2) is sufficient too

So answer is D.
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Re: If x - y > 10, is x - y > x + y ? [#permalink] New post 04 Sep 2014, 11:41
Hello from the GMAT Club BumpBot!

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Re: If x - y > 10, is x - y > x + y ?   [#permalink] 04 Sep 2014, 11:41
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